Sum 41 is a Canadian rock band from Ajax, Ontario, active since 1996. The current members are Deryck Whibley (lead vocals, rhythm guitar), Jason McCaslin (bass guitar, backing vocals), Steve Jocz (drums) and Tom Thacker (lead guitar, backing vocals).
In 1999, the band signed an international record deal with Island Records. The band released their debut album, All Killer No Filler in 2001. The band achieved mainstream success with their first single from the album, "Fat Lip", which reached number-one on th...